engineering

Steroid 11beta-monooxygenase

Steroid 11beta-monooxygenase is a engineering topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Steroid 11beta-monooxygenase rather than just read about it. In short: In enzymology, a steroid 11beta-monooxygenase (EC 1.14.15.4) is an enzyme that catalyzes the chemical reaction a steroid + reduced adrenal ferredoxin + O2 ⇌ {\displaystyle \rightleftharpoons } an 11beta-hydroxysteroid + oxidized adrenal ferredoxin + H2O The 3 substrates of this enzyme are steroid, reduced adrenal ferredoxin, and O2, whereas its 3 products are 11beta-hydroxysteroid, oxidized adrenal ferredoxin, and H…

Key takeaways

Steroid 11beta-monooxygenase belongs to engineering; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Steroid 11beta-monooxygenase to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Steroid 11beta-monooxygenase from memory before moving on to harder problems.

Reference excerpt

In enzymology, a steroid 11beta-monooxygenase (EC 1.14.15.4) is an enzyme that catalyzes the chemical reaction

a steroid + reduced adrenal ferredoxin + O2 ⇌ {\displaystyle \rightleftharpoons } an 11beta-hydroxysteroid + oxidized adrenal ferredoxin + H2O The 3 substrates of this enzyme are steroid, reduced adrenal ferredoxin, and O2, whereas its 3 products are 11beta-hydroxysteroid, oxidized adrenal ferredoxin, and H2O. This enzyme belongs to the family of oxidoreductases, specifically those acting on paired donors, with O2 as oxidant and incorporation or reduction of oxygen. The oxygen incorporated need not be derived from O2 with reduced iron-sulfur protein as one donor, and incorporation o one atom of oxygen into the other donor. The systematic name of this enzyme class is steroid,reduced-adrenal-ferredoxin:oxygen oxidoreductase (11beta-hydroxylating). Other names in common use include steroid 11beta-hydroxylase, steroid 11beta/18-hydroxylase, and oxygenase, steroid 11beta -mono-. This enzyme participates in c21-steroid hormone metabolism and androgen and estrogen metabolism. It employs one cofactor, heme.

References

GRANT JK, BROWNIE AC (1955). "The role of fumarate and TPN in steroid enzymic 11beta-hydroxylation". Biochim. Biophys. Acta. 18 (3): 433–4. doi:10.1016/0006-3002(55)90111-6. PMID 13276417. HAYANO M, DORFMAN RI (1954). "On the mechanism of the C11 beta-hydroxylation of steroids". J. Biol. Chem. 211 (1): 227–35. doi:10.1016/S0021-9258(18)71213-1. PMID 13211659. TOMKINS GM, MICHAEL PJ, CURRAN JF (1957). "Studies on the nature of steroid 11-beta hydroxylation". Biochim. Biophys. Acta. 23 (3): 655–6. doi:10.1016/0006-3002(57)90396-7. PMID 13426185. Yanagibashi K, Haniu M, Shively JE, Shen WH, Hall P (1986). "The synthesis of aldosterone by the adrenal cortex. Two zones (fasciculata and glomerulosa) possess one enzyme for 11 beta-, 18-hydroxylation, and aldehyde synthesis". J. Biol. Chem. 261 (8): 3556–62. doi:10.1016/S0021-9258(17)35682-X. PMID 3485096. Zuidweg MH (1968). "Hydroxylation of Reichstein's compound S with cell-free preparations from Curvularia lunata". Biochim. Biophys. Acta. 152 (1): 144–58. doi:10.1016/0005-2760(68)90016-7. PMID 4967077.

Worked examples

Example 1 — a first encounter with Steroid 11beta-monooxygenase

Start with the simplest possible case. Write down what Steroid 11beta-monooxygenase claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In engineering, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Steroid 11beta-monooxygenase before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Steroid 11beta-monooxygenase ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Steroid 11beta-monooxygenase

In research: Steroid 11beta-monooxygenase appears in engineering research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Steroid 11beta-monooxygenase in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Steroid 11beta-monooxygenase is common in secondary-school and first-year university syllabi. It links to neighbouring topics EC 1.14.15, EC 1.14 stubs, Enzymes of unknown structure, so understanding it makes those chapters shorter.
In everyday life: Look for Steroid 11beta-monooxygenase outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

Ask Teacher Smith questions about this articleOpens your AI tutor with a question about “Steroid 11beta-monooxygenase” →

Affiliate

Preply — study more efficiently by working with a personal tutor. 50% off.

How to study Steroid 11beta-monooxygenase in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Steroid 11beta-monooxygenase means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Steroid 11beta-monooxygenase out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Steroid 11beta-monooxygenase in simple terms?

In enzymology, a steroid 11beta-monooxygenase (EC 1.14.15.4) is an enzyme that catalyzes the chemical reaction a steroid + reduced adrenal ferredoxin + O2 ⇌ {\displaystyle \rightleftharpoons } an 11beta-hydroxysteroid + oxidized adrenal ferredoxin + H2O The 3 substrates of this enzyme are steroid…

Why does Steroid 11beta-monooxygenase matter?

Because it connects several engineering ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Steroid 11beta-monooxygenase?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Steroid 11beta-monooxygenase.